4 AWG Stranded Copper Wire (MTW), 600V, Green Color, 500ft | Asharqiyah Cables

Ampacity and Technical Performance for #4 AWG Copper Wire

Engineers specify #4 awg copper wire for industrial circuits carrying 85 to 100 amps. NEC guidelines tie ampacity directly to insulation temperature ratings. Dry locations at 60°C support 85 amps safely. Raising the rating to 75°C pushes capacity to 95 amps. Our MTW variant reaches 100 amps at 90°C. Derating becomes mandatory when ambient heat exceeds 40°C. Extreme summer conditions across Riyadh and Jeddah require strict thermal management. Maintain a 10 mm clearance from metal conduits to prevent dangerous heat accumulation in enclosed panels.

Insulation Types and Installation Requirements

MTW stands for Machine Tool Wire and utilizes a thick PVC jacket rated for 90°C dry environments. Compare this to #4 awg THHN or XHHW insulation types. THHN handles 90°C dry conditions but lacks moisture resistance entirely. THWN-2 adds wet location compatibility up to 75°C. For control panels in Saudi factories, green-stranded MTW delivers flexibility without sacrificing durability. Strip exactly 12 mm for proper termination. Use rated lugs and torque them to manufacturer specifications. Over-tightening cracks the insulation immediately and creates dangerous resistance points. Follow SASO and UL 1063 standards for every joint. Bending radius should stay above 50 mm to protect the 19-strand copper core.

Copper Versus Aluminum and Regional Sourcing

Copper conducts electricity with roughly 61% higher efficiency than aluminum at identical cross-sections. #4 awg aluminum wire requires a larger diameter to handle the same amperage, making #4 awg copper wire the preferred choice for compact panels and heavy machinery. Procurement trends for 2026 show stricter UL compliance checks across KSA construction sites. Industrial buyers search for #4 awg copper wire price in Saudi Arabia to budget accurately. Asharqiyah Cables manufactures this 4 gauge copper wire to strict American standards. Each 500-foot spool weighs approximately 255 kg per kilometer. Lead times typically run three to five days for local delivery. Verify UL certification codes like E498220 before ordering. Counterfeit insulation fails under heavy load. Trusted electrical materials stores in Riyadh, Jeddah, and Dammam stock verified batches with full traceability reports.